US3290575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-current motor control apparatus
Assignee: Raytheon Co
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Filing: 1966-02-18
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Granted: 1966-12-06
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Victor J Modiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:43
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
232 words
AN APPARATUS FOR CONTROLLING THE POLARITY OF A DIRECTCURRENT VOLTAGE APPLIED ACROSS A UTILIZATION DEVICE HAVING FIRST AND SECOND INPUT TERMINALS, SAID APPARATUS COMPRISING A DIRECT-CURRENT POWER SOURCE HAVING FIRST AND SECOND OUTPUT TERMINALS, THE POTENTIAL DEVELOPED AT SAID FIRST OUTPUT TERMINAL BEING POSITIVE RELATIVE TO THE POTENTIAL AT SAID SECOND OUTPUT TERMINAL; FIRST AND SECOND SWITCH MEANS EACH INCLUDING FIRST AND SECOND PAIRS OF NORMALLYOPEN CONTACTS AND FIRST AND SECOND PAIRS OF NORMALLYCLOSED CONTACTS; MEANS CONNECTING SAID FIRST OUTPUT TERMINAL OF SAID DIRECT-CURRENT POWER SOURCE IN PARALLEL THROUGH SAID FIRST PARIS OF NORMALLY-OPEN CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO A FIRST JUNCTION AND FROM SAID FIRST JUNCTION THROUGH SAID NORMALLY-CLOSED CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO SAID SECOND AND FIRST INPUT TERMINALS OF SAID UTILIZATION DEVICE, RESPECTIVELY; MEANS CONNECTING SAID SECOND OUTPUT TERMINAL OF SAID DIRECT-CURRENT POWER SOURCE IN PARALLEL THROUGH SAID SECOND PAIRS OF NORMALLY-OPEN CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO A SECOND JUNCTION AND FROM SAID SECOND JUNCTION AND FROM SAID SECOND JUNCTION THROUGH FIRST SECOND PAIRS OF NORMALLY-CLOSED CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO SAID FIRST AND SECOND INPUT TERMINAL OF SAID UTILIZATION DEVICE, RESPECTIVELY; AND UNIDERECTIONALLY CONDUCTING MEANS CONNECTED FROM SAID FIRST JUNCTION TO SAID SECOND JUNCTION, SAID UNIDIRECTIONALLY CONDUCTING MEANS BEING POLED TO ALLOW NORMAL CURRENT FLOW IN A DIRECTION TOWARDS SAID FIRST JUNCTION.
Claim 2
Independent Claim
232 words
AN APPARATUS FOR CONTROLLING THE POLARITY OF A DIRECTCURRENT VOLTAGE APPLIED ACROSS A UTILIZATION DEVICE HAVING FIRST AND SECOND INPUT TERMINALS, SAID APPARATUS COMPRISING A DIRECT-CURRENT POWER SOURCE HAVING FIRST AND SECOND OUTPUT TERMINALS, THE POTENTIAL DEVELOPED AT SAID FIRST OUTPUT TERMINAL BEING POSITIVE RELATIVE TO THE POTENTIAL AT SAID SECOND OUTPUT TERMINAL; FIRST AND SECOND SWITCH MEANS EACH INCLUDING FIRST AND SECOND PAIRS OF NORMALLYOPEN CONTACTS AND FIRST AND SECOND PAIRS OF NORMALLYCLOSED CONTACTS; MEANS CONNECTING SAID FIRST OUTPUT TERMINAL OF SAID DIRECT-CURRENT POWER SOURCE IN PARALLEL THROUGH SAID FIRST PARIS OF NORMALLY-OPEN CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO A FIRST JUNCTION AND FROM SAID FIRST JUNCTION THROUGH SAID NORMALLY-CLOSED CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO SAID SECOND AND FIRST INPUT TERMINALS OF SAID UTILIZATION DEVICE, RESPECTIVELY; MEANS CONNECTING SAID SECOND OUTPUT TERMINAL OF SAID DIRECT-CURRENT POWER SOURCE IN PARALLEL THROUGH SAID SECOND PAIRS OF NORMALLY-OPEN CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO A SECOND JUNCTION AND FROM SAID SECOND JUNCTION AND FROM SAID SECOND JUNCTION THROUGH FIRST SECOND PAIRS OF NORMALLY-CLOSED CONTACTS OF SAID FIRST AND SECOND SWITCH MEANS TO SAID FIRST AND SECOND INPUT TERMINAL OF SAID UTILIZATION DEVICE, RESPECTIVELY; AND UNIDERECTIONALLY CONDUCTING MEANS CONNECTED FROM SAID FIRST JUNCTION TO SAID SECOND JUNCTION, SAID UNIDIRECTIONALLY CONDUCTING MEANS BEING POLED TO ALLOW NORMAL CURRENT FLOW IN A DIRECTION TOWARDS SAID FIRST JUNCTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |